Zyecificatiojnt



(No Model.)

B. T. TRIMMBR.

BURGLAR ALARM.

No. 330,942. Patented Nom-,24, 1885 @y 77mm@ UivrTeiu hTaTns PATENTOrti@ a c BENJAMIN T. TRIMMER, OF WEST BLOOMFIELD, NEV YORK.

BURGLAR-ALARW.

"E'ZCFICATIN forming part. of Letters Patent No. 330,942, dated November24, 1885.

Application filed June 21, 1884.

To ctZZ whom/it may concern,.-

Beit known that I, BENJAMIN T. TRIMMER, a citizen of the United States,residing at West Bloomfield, in the county of Ontario and State of NewYork, have invented certain new and useful Improvements iuBurglar-Alarms, of

-which the following` is a specification, reference being had therein tothe accompanying drawings.

Thisinvention has relation to burglar-alarms of that class known asdetonatingg and it consists in certain features of' constructionhereinafter described, and specifically set forth in the claims.

Referring to the drawings, Figure lis a perspective, Fig. 2 is a centralvertical section, and Fig. 3 a bott-om plan, of a burglar-alarmconstructed in accordance with my invention. Fig. 4 illustrates onemanner of using the same.

Like letters refer to like parts in all the iigures.

" rIghe principal object iu View, and the principal result attained bymy invention, is a succession of detonations or reports, in order thatin case the first should fail to waken the occupants of the house thesucceeding ones will do so, and the repetition of reports will alsoresemble successive shots of a revolver, and thus serve to intimidateintruders.

Although the objects and advantages of my invention are as set forth,still certain features of construction hereinafter described may beemployed in alarms where but one explosion occurs when it is broughtinto action, and I therefores0 far as regards said features, do notlimit myself to an alarm adapted to give a succession of reports.

A main case or shell is employed, and is constructed in two sections, AA', each being like the other, excepting in the construction of thehinge-joint uniting the two, which comprises a projecting lug, B, uponone vof the sections, and a recess, B, formed in the other to receivesaid lug, so that a pintle, B2, when passed through the lugs and thewalls of the recess, serves to pivotally connect the two sectionstogether. The upper half of the case is Upon the neck is pivoted at A5 aSerial No. |3.`),Gl1. (No model.)

closing-hook, A, which is adapted to embrace a pin, AT, upon theopposite section ofthe case, and which is provided with asuspensionring, AS, whereby the two sections are secured in a closedposition, and at the same time adapted to be suspended, and so far asthe closing of the sections is concerned the suspension-hook may berelied upon, and in that case the ring A* may be dispensed with.

The lower half of the case is thicker and heavier than the upper half,and is provided with a series of chambers, A", adapted to receivecartridges or shells C. A similar recess or chamber', A, may be formedin the neck portion A-that is, one-half of the chamber being formed ineach section ofthe case, as is the chamber located in the lower portionthereof. In this instance six chambers are formed in the case, one atthe top, one at the bottom, and four at the central portion of thecase.` all of the chambers opening inwardly, and provided with means forexploding cartridges arranged therein.

The cartridge employed may be either a center or a rim fire cartridge,or such as are tired by means of fuses projecting therefrom. Whenacentralfire cartridge is used, the firingpin D is suspended oppositethe center of the cartridge-chamber, either upon a spring, D

or upon a ring, E, the former construction being preferably employed inconnection with the lower chamber in the case, cach half of the caseheilig grooved, as at A10, to receive the flange of the cartridge. Thesame construction is employed in the neck portion of the case. Therecesses or chambers at the central portion of the case are arrangedradially, and may be provided with nipples, as F, upon which apercussion-cap may be placed, by which to explode a cartridge in thechamber, or a firing-pin may be carried mounted in the bore of saidnipple in order to explode a cartridge; or the fuse, as G, may bearranged in the cartridge to project toward the center of the case andto be ignited by the explosion of the first cartridge in the case. Incase a nipple is used, the ring E is employed to eX plode the cartridge,said ring being supported upon brackets A, cast upon the case andretained upon the brackets by means of wire spring or springs I-I,extending from the top IOO of the-ring through oppositely-arrangedopenings .between the ribs A2, and from thence to the upper surface ofthe ring at an opposite side of the case, when by simply removing thespring H the ring may be removed upwardly from the brackets for thepurpose of applying caps to the nipples. The ring E is of largerdiameter than the case, and is simply held upon the brackets bythe wirespring H, so that the ring is capable of movement to and lfrom the outerwalls of the case upon the brackets.

rlhis being the construction, the operation is as follows: The alarm maybe suspended by` means ofa cord or wire attached directly to thesuspension-hook A8, and detachablyconnected with a door or window of theapartment or building, which may be eithera barn, smokehouse, hen-house,or any other building, so that when said door or window is 'opened thealarm will fall tothe Hoor and, the lower portion of its case being theheaviest, in falling it will maintain an upright position and bring thefiring-pin D suddenly and forcibly in contact with the iioor, wherebythe cartridge in the lower chamber will be eX- ploded. Now, in casefuses G are employed the flame from the rst cartridge will ignite saidfuses, and the length of the same will determine the order of successionin the explo sion of the remaining cartridges. When percussion-caps areemployed in exploding the cartridges, then as the alarm comes in contactwith the floor the first explosion is caused by said contact directly,the tiring-pin coming in contact with the cap in the lower cartridge andthe explcsion of said cartridge in reacting against the case will throwit about the apartnient and cause it to fall so as to strike the ring Ein such a manner that one or the other of the centrally-arrangedcartridges would be exploded by reason of the lateral movement of thering upon the brackets, and the ex'- plosion of said cartridges would ina like manner probably explode the others. As there is undoubtedlypossibility of afailure to explode some of the centrally-arrangedcartridges by means of the ring, fuses G would perhaps be the preferablemeans for causing` their eXplos'ion, and therefore I do not limit myselfto the employment of the ring E for such purpose.

By reference to Fig. 4 a preferred form of suspension will be seen,which is to support the alarm upon a bell-crank lever, I, pivoted to anysuitable part of the building, one arm of the lever being connected by acord, J, to

a strap, peg, or any other suitabledevice, K,

which can be inserted between a door, L, and its casting in such amanner that when a door, or it may be a window, is opened the device Kwill be released, and the weight of the alarm will cause the bell-cranklever to oscillate and permit the alarm to fall to the floor.

Having described my invention and its operation, what I claim isl. Aburglar-alarm consisting of a spherical casing provided with a series ofradial chambers and a surrounding ring with means, substantially asspecified, 'for successively exploding the cartridges therein.

2. A burglar-alarm of the class described, comprising a shell or caseformed in two sections, each of which has formed therein onehalf of acartridge-chamber, substantially as specified.

3. A burglar-alarm of the class described, comprising a case formed intwo sections, pivotally secured to each other at their lower ends, andprovided at their upper ends with a uniting hook having asuspension-ring, substantially as specified. p

4. The alarm-case consisting of the sections A A', provided with thehinge B B' B2, and with a suspension-hook, A6, having the eye A", andthe iring-pin D. mounted upon spring D', and provided with thecartridge-chambers A9, arranged as described.

5. The combination of the section A, provided with the lug B, the springand pin D D', and the half-chambers, with the section A', provided withthe pintle B2 and lug B', substantially as shown and described.

6. The case A A', provided with a centra radial series of cartridgechambers, A, and with the lower chamber A9 the spring-sup portedring-pin D, and the ring E, mounted upon the brackets A, substantiallyas shown and described.

7. The combination of the case A A', having the brackets A11, and,central radial cartridge-chambers, with the ring E and spring H,substantially as shown and described.

In testimony whereof I afix my signature in presence of two witnesses.

BENJAMIN T. TRIMMER.

Witnesses:

E. E. Masson, L. C. HILLs.

IOO

